Japanese radiation now detectable in B.C.

Minute levels measured but considered no risk, more monitoring stations coming

View from above of the Fukushima nuclear power complex in northeastern Japan

Health officials say sensors in B.C. have now detected “minute” levels of radiation coming here from Japan’s leaking nuclear reactors.

But they continue to assure the public there is no cause for residents here to worry  because of the dispersal of radioactive particles across thousands of kilometres of ocean.

“These amounts are negligible and do not pose a health risk to British Columbians,” the B.C. Centre for Disease Control said in an update posted Monday.

“We are expecting very slight increases in radiation until a week after the reactors are stabilized,” it said. “These are not cause for concern, and are smaller than the normal day-to-day fluctuations typically seen in B.C.”

BCCDC officials say the radiation levels arriving from Japan are tiny compared to other natural sources of exposure for B.C. residents, including rocks and soil, ultraviolet radiation from the sun and cosmic radiation from space.

Levels so far detected are at 0.0005 microsieverts per day, according to data from Health Canada’s Radiation Protection Bureau and released by the BCCDC.

By comparison, a dental x-ray is about 10 microsieverts – or 20,000 times as much.

Passengers on a cross-country airline flight can be exposed to 30 microsieverts or 60,000 times as much.

And a CT scan can expose a person to between 5,000 and 30,000 microsieverts – more than 10 million times as much as the increased daily exposure in B.C. from the Japanese radiation plume.

In other words, it would take more than 27,000 years of exposure at the current slightly elevated levels of radiation from Japan in B.C. to equal the exposure from a single CT scan.

“It’s minute, to the point of insignificant,” said a Health Canada official.

Canadians on average are exposed to 5.5 to 8.2 microsieverts per day, or 2,000 to 3,000 per year, from all sources, most of which are natural.

Before the nuclear crisis, baseline radiation readings at stations in Vancouver, Victoria and Sidney were well below the national average, ranging from 0.22 to 0.44 microsieverts per day.

Health Canada is also adding nine more radiation monitoring stations in B.C., in addition to six units already in place along the coast.

Residents are urged not to take or stockpile potassium iodide, which should be taken only when recommended by doctors and can otherwise cause side effects.

The Japanese nuclear disaster at the Fukushima Daiichi nuclear plant has caused partial meltdowns at multiple reactors, releasing large amounts of radiation and triggering a massive evacuation of that region.

The crisis is currently rated as severe as the Three Mile Island disaster in the U.S. but still well short of the 1986 Chernobyl reactor fire that contaminated large areas of eastern Europe.

Just Posted

Chinook fishery not ‘closed’ in area is message from guides

Conservative MP Calkins comes to Campbell River hear fishing stakeholders’ concerns

UPDATE: Fire crews suppress smouldering fire on Highway 19 north of Campbell River

Wildfire reached .25 hectares, according to BC Wildfire Service

Strathcona Regional District won’t cover director’s court costs

Case was concluded June 10, with lawyer saying clients were put up to launching petition

Intertidal walk looks at life on the reef in Campbell River

Biologist Sandra Milligan has been leading walks for 13 years

Residents welcomed to new Habitat for Humanity homes in Campbell River

New homeowners received keys during ceremony at affordable housing development

VIDEO: ‘Avengers: Endgame’ to be re-released with new footage

‘Avatar’ holds global box office record at $2.788 billion, while ‘Endgame’ stands at $2.743 billion…

B.C. teen killed by falling tree near Victoria

Second youth also injured in freak incident during field trip at Camp Barnard near Sooke

Elias Pettersson wins Calder Trophy as NHL’s top rookie

Vancouver forward first Canuck to win award since Pavel Bure in 1992

FVRD chair calls B.C. incineration plan for Philippines waste ‘disturbing’

Metro Vancouver ‘uniquely capable’ of safely disposing of waste coming back to Canada, say officials

VIDEO: Acknowledging skeptics, finance minister vows to build Trans Mountain project

Bill Morneau said he recognizes ‘huge amount of anxiety’ in Calgary over future of oil and gas sector

Shovels could be in the ground on Trans Mountain by September, CEO says

Ian Anderson points to weeks likely required for NEB to reinstate 2016 regulatory record

Scorpion gives birth after hitching ride in B.C. woman’s luggage

A Vancouver woman inadvertently brought the animal home from a trip to Cuba

RCMP allows officers to grow beards

Members can now wear beards and goatees, as long as they’re neatly groomed

Girl, 10, poisoned by carbon monoxide at B.C. campsite could soon return home

Lucille Beaurain died and daughter Micaela Walton, 10, was rushed to B.C. Children’s Hospital on May 18

Most Read